Article Search Results

Show Filters
Showing 52 results for "*"
Ruby
Article
Ruby Quality Factors

Ruby can command the highest prices of any coloured gemstone. The per-carat prices of fine-quality rubies have been rising consistently, and frequently break auction records. Click here to learn about the factors that make ruby so desirable!

Read More

Sapphire
Article
Sapphire Quality Factors

Sapphire is one of the big three of coloured gemstones (the other two are ruby and emerald). This durable gemstone captures jewellery buyers with its practicality and aura of romance. Click here to find out more about the factors that make sapphire so desirable!

Read More

Opal
Article
Opal Quality Factors

Individual opals are as diverse as snowflakes or fingerprints and can vary widely in appearance and quality. Learn about the factors that make opals so desirable!

Read More

Turquoise
Article
Turquoise Quality Factors

Typically, turquoise is judged on three basic quality factors: colour, texture and the presence or absence of matrix. Learn more about turquoise and what makes this gem so sought after!

Read More

Man sits at his desk with a display stand of multiple pieces of jewelry in front of him.
Article
Alum’s Lifelong Quest: Searching for Jewellery Unicorns

Alan Nacht continues his family’s legacy - Bernard Nacht & Co. – and his quest for unforgettable jewellery.

Read More

Gerd Dreher agate lily and Patrick Dreher citrine mouse
Gem Virtuosos: The Drehers and Their Extraordinary Carvings

A look at the artistic heritage of the Drehers, an influential family of gem carvers in Idar-Oberstein, Germany.

Read More

Various colors of nephrite
Characterisation of Mg and Fe Contents in Nephrite Using Raman Spectroscopy

Evaluates the usefulness of Raman spectroscopy in distinguishing the colour varieties of nephrite based on the relative ratio of Mg to Fe concentration.

Read More

Article
10 Tips for Buying a Diamond Online

Looking to buy a diamond online? We have 10 tips to help you click the “Buy Now” button with confidence.

Read More

Tanzanite
Article
Tanzanite Quality Factors

Learn about the factors that make tanzanite so desirable.

Read More

Article
Famous Diamonds Examined by GIA

An aura of mystery has always surrounded these natural wonders, so it was quite an honour when GIA researchers examined these famous diamonds.

Read More